One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,9)(3,7,11,6)(4,12,13,8)(10,14,16,15)(17,18,22,20)(19,24,27,23)(21,28,30,25)(26,31,29,32)(33,34)(35,38)(36,41)(37,42)(39,43)(40,46)(44,47)(45,48)(1,3)(2,6)(4,10)(5,11)(7,9)(8,14)(12,15)(13,16)(18,20)(23,24)(25,28)(31,32)(33,35)(34,40)(36,44)(37,47)(38,43)(39,46)(41,45)(42,48) involution — undirected(1,2)(3,7)(4,8)(5,9)(6,11)(10,15)(12,13)(14,16)(17,19)(18,23)(20,24)(21,26)(22,27)(25,31)(28,32)(29,30)(33,36,39,42)(34,41,43,37)(35,44,46,48)(38,47,40,45)(1,2)(3,6)(4,8)(5,9)(7,11)(10,14)(12,13)(15,16)(17,20,22,18)(19,24,27,23)(21,28,30,25)(26,32,29,31)(33,37,39,41)(34,42,43,36)(35,45,46,47)(38,48,40,44)(1,3)(2,7)(4,10)(5,11)(6,9)(8,15)(12,14)(13,16)(17,19)(18,24)(20,23)(21,29)(22,27)(25,31)(26,30)(28,32)(33,34)(35,40)(36,41)(37,42)(38,46)(39,43)(44,45)(47,48) involution — undirected(1,4)(2,8)(3,10)(5,13)(6,14)(7,15)(9,12)(11,16)(17,21)(18,25)(19,26)(20,28)(22,30)(23,31)(24,32)(27,29)(33,38,39,40)(34,35,43,46)(36,47,42,45)(37,48,41,44)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.